Apparatus for stretching metal plate



March 9, 1965 A. D. SMITH APPARATUS FOR STRETCHING METAL PLATE Filed Dec. 11, 1962 23 Sheets-Sheet 1 won mm m Own ARTHUR DEAN SNHTH ATTORNEY March 9, 1965 A. D. SMITH APPARATUS FOR STRETCHING METAL PLATE 25 Sheets-Sheet 2 Filed Dec. 11, 1962 INVENTOR ARTHUR DEAN SMITH ATTORNEY March 9, 1965 sMlTH 3,172,528

APPARATUS FOR STRETCHING METAL PLATE Filed Dec. 11. 1962 w 25 Sheets-Sheet 3 INVENTOR A R 1'14 UR DEAN 5M lTH ATTORNEY March 9, 1965 A--ID. SMITH 3,172,528

APPARATUS FOR STRETCHING METAL PLATE Filed Dec. 11, 1962 23 Sheets-Sheet 4 7 INVENTOR ARTHUR DEAN SMITH ATTORNEY 25 Sheets-Sheet 5 ARTHUR DEAN 6M ITH ATTORNEY A. D. SMITH March 9, 1965 APPARATUS FOR STRETCHING METAL PLATE Filed Dec. 11. 1962 05 1111! 1AAAAI11fi w/ A\ )A A 11 wow wow .ww n -i vow 3w ........t, l l I. l um 03 v3 7 m m g Sm N3 0 lqlll w: o m L m! March 9, 1965 A. D. SMITH APPARATUS FOR STRETCl-IING METAL PLATE Filed Dec. 11, 1962 AR'I'NUR DEAN SMITH ATTORNEY March 9, 1965 A. D. SMITH APPARATUS FOR STRETCHING METAL PLATE 23 Sheets-Sheet 7 Filed Dec. 11, 1962 INVENTOR ATTORNEY H h M 5 03 m M R w & w m 5 m2. A won N2. A mp 2. 6 m2. m2. MW 17 K/ L Fw v Y o:. m Jfl q mmh oom B mm Q2. 22. H A. .lAIQflNlIlil! m2. 1:91. 5 Non .iisiibiai A inu m yg mmwmufi x t c Q E v; L%. m ow H 3m \n 2%" com mom 0mm March 9, 1965 Filed Dec. 11, 1962 A. D. SMITH FOR STRETCHING METAL PLATE APPARATUS TO STRETCHING 23 SheetsSheet 8 TO SOURCEOF FLUID CYLINDERS 78|\ 78|' 784 782 i no 759 780 TO VALVES 155,155 2:: 57- .Z 5

INVENTOR ARTHUR DEAN smrra ATTORNEY March 9, 1965 A. D. SMITH APPARATUS FOR STRETCHING METAL PLATE I 25 Sheets-Sheet 9 Filed Dec. 11. 1962 ARTHUR DEA INVENTOR N SMTH A. D. SMITH 25 Sheets-Sheet l0 APPARATUS FOR STRETCHING METAL PLATE March 9, 1965 Filed Dec. 11, 1962 Fr .Z 5.

ATTORNEY March 9, 1965 A. D. SMITH APPARATUS FOR STRETCHING METAL PLATE 23 Sheets-Sheet 11 Filed Dec. 11, v1962 TO CYLINDER r l I L- 146' CYLINDER lsl INVENTOR ARTHUR DEAN sMrrH ATTORNEY March 9, 1965 A. D. SMITH APPARATUS FOR STRETCHING METAL PLATE 23 Sheets-Sheet 12 Filed Dec. 11,

R m m 1 M m Sm 3Q L 8 O 0 O O\\0 G O A 1 L F 0 5% m SQ 8% Y @Q B \NL'V W b mw mmm m8 7 SQ r n o o 1 O 0 I SN 0 8R o? mm M 8 8% MW S. M 8w 8.1 val H A Q93 0 H omm u $8 Sew H V8 16% N8 8% #9 3 SQ 8a sow/ Q6 5 3 8% 8mm 8R A ORNEY March 9, 1965 A. D. SMITH APPARATUS FOR STRETCHING METAL PLATE Filed Dec. 11, 1962 23 Sheets-Sheet l3 March 9, 1965 A. D. SMITH APPARATUS FOR STRETCHING METAL PLATE 25 Sheets-Sheet 14 Filed Dec. 11, 1962 91% Tam March 9, 1965 A. D. SMITH 3,172,528

APPARATUS FOR STRETCHING METAL PLATE Filed Dec. 11, 96 25 Sheets-Sheet l5 INVENTOR A. DEAN SM/TH ATTORNEY March 9, 1965 A. D. SMITH 3,172,528

APPARATUS FOR STRETCHING METAL. PLATE 23 Sheets-Sheet 16 Filed Dec. 11, 1962 %AW ATTORNEY March 9, 1965 A. D. SMITH APPARATUS FOR STRETCHING METAL PLATE 25 Sheets-Sheet 17 Filed Dec. 11. 1962 m f ullml INVENTOR A. DEAN SMITH ATTO NEY March 9, 1965 A. D. SMITH APPARATUS FOR STRETCHING METAL PLATE 23 Sheets-Sheet 18 Filed Dec. 11, 1962 INVENTOR A. DEAN SMITH March 9, 1965 A. D. SMITH 3,

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1. AN APPARATUS FOR ENLONGATING WORKPIECES COMPRISING A COMBINATION A SPACED, MUTUALLY OPPOSED PAIR OF WORKPIECE GRIPPING HEAD ASSEMBLIES, TUBE-LIKE MEANS INTERPOSED BETWEEN SAID GRIPPING HEAD ASSEMBLIES FOR MOVING ONE OF SAID HEAD ASSEMBLIES WITH RESPECT TO THE OTHER AND EFFECTING TENSILE ELONGATION OF THE WORKPIECE INTERPOSED THEREBETWEEN, SAID TUBE-LIKE MEANS HAVING A MANIPULATING CYLINDER MEANS DISPOSED THEREIN FOR MOVING THE SAID ONE OF SAID GRIPPING HEAD ASSEMBLIES RELATIVE TO THE OTHER, AND STRETCHING CYLINDER MEANS ASSOCIATED WITH SAID TUBE-LIKE MEANS FOR CONTINUING THE MOVEMENT OF THE SAID ONE OF THE GRIPPING HEAD ASSEMBLIES AFTER THE INITIAL MOVEMENT THEREOF BY SAID MANIPULATING CYLINDER MEANS HAS INTRODUCED AN INITIAL STRESS IN A WORKPIECE, BOTH SAID MANIPULATING AND SAID STRETCHING CYLINDER MEANS THEN ACTING IN CONCERT TO ELONGATE A WORKPIECE. 